Improvement in steam-engine governors



W. C. FREEMAN.

Improvement in Steam-Engine Governors. No. 130,422. PatentedAing.13,1872.

minim: 311mm:

UNITED STATES PATENT OF ICE.

WILLIAM G. FREEMAN, OF LOUISIANA, MISSOURI.

IMPROVEMENT IN STEAM-ENGlNE GOVERNORS.

Specification forming part of Letters Patent No. 130,422, dated August13, 1872.

Specification describing a new and Improved Steam-Engine Governor,invented by WIL- LIAM O. FREEMAN, of Louisiana, in the county of Pikeand State of Missouri.

Figure 1 represents a side view of my improved steam-engine governor.Fig. 2 is an end view, and Fig. 3 a vertical central section, of thesame.

Similar letters of reference indicate correspondin g parts.

This invention relates 'to a new steam-engine governor in which therotation of an eccentric within a chamber filled with a liquid, andhaving spring valves that bear against the eccentric, causes a movementof the surrounding vessel and a consequent adjustment of thesteam-valve.

In the accompanying drawing, A represents a spherical or nearlyspherical vessel, which contains a hollow chamber, (0, within. Thisvessel is supported on a frame, 13, by projecting trunnions b and d, asshown in Fig. 2, one of said trunnions I) being part of a shaft, 0,which enters the vessel A through a stuflingbox, 0. The shaft 0 carrieswithin the vessel A an eccentric, f, of suitable form. 9 is a pulley, orits equivalent, upon the shaft 0, outside of the vessel A. WVhen theshaft 0 is revolved by suitable means, and with suitable velocity, theeccentric f revolves within it. But the vesselA does not revolve withthe shaft, as the latter turns loose in the stuffingbox. A projectingarm, h, of the vessel A connects, by a strap or rod, 0, with the stem ofthe steam-valve D. Opposite to the arm h projects from the vessel a rod,i, upon which an adjustable weight, j, is secured. This weight holds thevalve balanced in accordance with the desired degree of steam-pressure.Though not revolving with the shaft 0, the vessel A can neverthelessvibrate on its trun nions whenever the balance between its valve D andweight j is disturbed. Within the chamber a are pivoted four, more orless, valves or plates, 1 l, which are, by springs m m, held in contactwith the edge of the eccentric f. The entire chamber a is moreoverfilled with oil, or equivalent liquid. As the eccentric rotates in thechamber, it tends to crowd the surrounding liquid in the direction ofits own motion againstthe circumference of the chamber a. As long assuch motion does not exceed a certain speed, the efl'ect upon the vesselA will not be noticeable. But whenever the eccentric turns too rapidly,the effect of the liquor thrown against the vesselA and valves lwill befelt in causing the vessel to turn so as to shut the valve D. When themotion of the shaft 0 is too slow, the weight 7' will preponderate toopen the valve. It will be noticed that the arm h and rod 0;, which arein line with each other, are at right angles to the shaft 0, though theymay be in the same horizontal plane as said shaft. The vessel A in orderto admit the insertion of the valves 1, eccentric/f, shaft 0, and of theliquid, is made in tw'o'or more sections, (three being represenfiad inFig. 2,) that are held together by means of screws or bolts n n.

Havingth us described my invention, I claim as new and desire to secureby Letters Patent The vibrating hollow vessel A, carrying thevalve-connection h, the weighted rod 2', and the rotary shaft 0, andcombined with the eccentric f, valves 1, andsprings m, substantially asherein shown and described.

*WILLIAM G. FREEMAN.

Witnesses:

I. T. OVERALL, R. E. PLEASANTS.

